HK105895A - Programmable frequency divider for generating a low-frequency signal from a high-frequency signal - Google Patents

Programmable frequency divider for generating a low-frequency signal from a high-frequency signal

Info

Publication number
HK105895A
HK105895A HK105895A HK105895A HK105895A HK 105895 A HK105895 A HK 105895A HK 105895 A HK105895 A HK 105895A HK 105895 A HK105895 A HK 105895A HK 105895 A HK105895 A HK 105895A
Authority
HK
Hong Kong
Prior art keywords
divider
ratio
frequency signal
flip flop
frequency
Prior art date
Application number
HK105895A
Inventor
Peter Mahr
Original Assignee
Thomson Brandt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK105895A publication Critical patent/HK105895A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/68—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a base which is a non-integer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
    • H03K23/667—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses by switching the base during a counting cycle

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

A programmable frequency divider for integral and fractional divider ratios is described. It comprises a first divider circuit which is preset for an integral component of the divider ratio, and a second divider ratio with a flip flop which acts on the control input of the first divider circuit in the direction of changing the divider ratio. The object is to create a programmable frequency divider which, in addition to high resolution, also provides a large range of variation of the divider ratio. For this purpose, the flip flop is constructed as dynamic flip flop, the dynamic input of which is connected to the output of the second divider circuit. The output of the flip flop is connected to the control input of the first divider circuit via an adder which changes an integral part of the divider ratio and the integral part of the divider ratio is alternately increased and decreased at the ratio of the fractional component of the divider ratio.
HK105895A 1987-02-21 1995-06-29 Programmable frequency divider for generating a low-frequency signal from a high-frequency signal HK105895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873705629 DE3705629A1 (en) 1987-02-21 1987-02-21 PROGRAMMABLE FREQUENCY DIVIDER AND METHOD FOR GENERATING A LOW-FREQUENCY SIGNAL FROM A HIGH-FREQUENCY SIGNAL

Publications (1)

Publication Number Publication Date
HK105895A true HK105895A (en) 1995-07-07

Family

ID=6321503

Family Applications (1)

Application Number Title Priority Date Filing Date
HK105895A HK105895A (en) 1987-02-21 1995-06-29 Programmable frequency divider for generating a low-frequency signal from a high-frequency signal

Country Status (6)

Country Link
EP (1) EP0280126B1 (en)
AT (1) ATE107100T1 (en)
DE (2) DE3705629A1 (en)
ES (1) ES2054714T3 (en)
HK (1) HK105895A (en)
SG (1) SG30578G (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413868Y2 (en) * 1988-11-29 1992-03-30
US4975931A (en) * 1988-12-19 1990-12-04 Hughes Aircraft Company High speed programmable divider
US5195111A (en) * 1990-09-07 1993-03-16 Nihon Musen Kabushiki Kaisha Programmable frequency dividing apparatus
DE4302438A1 (en) * 1993-01-29 1994-08-04 Blaupunkt Werke Gmbh Circuit arrangement for frequency division by an odd number
DE19519321C2 (en) * 1995-05-26 1997-10-16 Gerhard Kultscher Ind Elektron Frequency divider with dual, current, decimal or hexadecimal divisor input
US6310922B1 (en) * 1995-12-12 2001-10-30 Thomson Consumer Electronics, Inc. Method and apparatus for generating variable rate synchronization signals
FR2757001B1 (en) * 1996-12-05 1999-02-05 Sgs Thomson Microelectronics DEVICE FOR CUTTING THE PERIOD OF A SIGNAL INTO N NEARLY EQUAL PARTS
DE50210978D1 (en) * 2001-03-15 2007-11-08 Bosch Gmbh Robert METHOD AND DEVICE FOR FORMING TAKT PULSES IN A BUS SYSTEM WITH AT LEAST ONE PARTICIPANT, BUS SYSTEM AND PARTICIPANTS

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314612A1 (en) * 1973-03-23 1974-09-26 Muenchener Appbau Fuer Elektro PULSE COUNTER ARRANGEMENT
DE2654955A1 (en) * 1976-12-03 1978-06-08 Siemens Ag Variable frequency pulse generator - has programmable frequency divider between two fixed frequency dividers
DE2719147C2 (en) * 1977-04-29 1985-01-10 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Programmable divider
DE2727889A1 (en) * 1977-06-21 1979-01-18 Siemens Ag Pulse train generator with programmable frequency divider system - has divider output coupled to input of logic circuit with two inputs and single output, with other input coupled to second divider output
US4254327A (en) * 1979-05-17 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Pulse generator having selectable pulse width and pulse repetition interval
DE2922369C2 (en) * 1979-06-01 1987-02-05 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Programmable pulse divider
JPS56169432A (en) * 1980-05-31 1981-12-26 Toshiba Corp Frequency dividing ratio setting circuit for programmable counter
DE3410800A1 (en) * 1984-03-23 1985-10-03 Karl-Max 8000 München Wagner Programmable frequency divider, particularly frequency prescaler
FR2567697B1 (en) * 1984-07-13 1991-03-29 Servel Michel DEVICE FOR LOCATING THE TRANSITIONS OF A DATA SIGNAL IN RELATION TO A CLOCK SIGNAL AND FRAMING MECHANISM COMPRISING SUCH A DEVICE
DE3503182A1 (en) * 1985-01-31 1986-08-07 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Programmable counter
DE3516952A1 (en) * 1985-05-10 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Device for dividing a clock frequency in accordance with a predetermined dividing factor
DE3521288A1 (en) * 1985-06-13 1986-12-18 Siemens AG, 1000 Berlin und 8000 München Arrangement for digital division of an input cycle

Also Published As

Publication number Publication date
DE3889942D1 (en) 1994-07-14
EP0280126B1 (en) 1994-06-08
EP0280126A2 (en) 1988-08-31
EP0280126A3 (en) 1990-03-07
SG30578G (en) 1995-09-18
DE3705629A1 (en) 1988-09-01
ES2054714T3 (en) 1994-08-16
ATE107100T1 (en) 1994-06-15

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)